Material for absorbing and decomposing formaldehyde, and preparation method thereof

A formaldehyde and formaldehyde decomposition technology, applied in the field of air purification, can solve problems such as desorption, and achieve the effects of short reaction time, strong effect, and recyclable photocatalytic efficiency

Active Publication Date: 2020-04-17
SICHUAN COLLEGE OF ARCHITECTURAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a material that absorbs and decomposes formaldehyde, and solves the problem that the removal of formaldehyde by existing strong adsorbents easily leads to desorption

Method used

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  • Material for absorbing and decomposing formaldehyde, and preparation method thereof
  • Material for absorbing and decomposing formaldehyde, and preparation method thereof
  • Material for absorbing and decomposing formaldehyde, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 1 As shown, a material that absorbs and decomposes formaldehyde uses coarse-porous microsphere silica gel as a carrier, and the coarse-porous microsphere silica gel is loaded with p-type semiconductor Cu 2 S; the p-type semiconductor Cu 2 The loading of S was 6%.

[0052] The preparation method of the above-mentioned recycled indoor air purification material is as follows:

[0053] Include the following steps:

[0054] 1), respectively configure the diethylene glycol solution A and the diethylene glycol solution B with a concentration of 0.5mol / L;

[0055] 2), 6.8g CuCl 2 2H 2 O was added to 100ml of diethylene glycol solution A, stirred to make CuCl 2 2H 2 O is completely dissolved, and the stirring adopts a collector type constant temperature heating magnetic stirrer;

[0056] 3), add 2g of polyvinylpyrrolidone to the solution obtained in step 2), and stir until completely dissolved;

[0057] 4) Add 5g of coarse-porous microsphere silica gel to t...

Embodiment 2

[0062] A material that absorbs and decomposes formaldehyde, using coarse-porous microsphere silica gel as a carrier, and the coarse-porous microsphere silica gel is loaded with p-type semiconductor Cu 2 S; the p-type semiconductor Cu 2 The loading of S was 1.6%.

[0063] The difference with the preparation method in Example 1 is:

[0064] CuCl 2 2H 2 The addition of O is 6.8g, the volumes of diethylene glycol solution A and diethylene glycol solution B are 100ml respectively, the addition of polyvinylpyrrolidone is 2.0g, the addition of coarse porous microsphere silica gel 5.0g, coarse porous microsphere silica gel, CuCl in the suspension 2 2H 2 The mass ratio of O and thiourea is 5:6.8:0.38; the oil bath temperature is 190°C.

Embodiment 3

[0066] A material that absorbs and decomposes formaldehyde, using coarse-porous microsphere silica gel as a carrier, and the coarse-porous microsphere silica gel is loaded with p-type semiconductor Cu 2 S; the p-type semiconductor Cu 2 The loading of S is 20%.

[0067] The difference with the preparation method in Example 1 is:

[0068] CuCl 2 2H 2 The add-on of O is 6.8g, and the volume of diethylene glycol solution A and diethylene glycol solution B is respectively 100ml, and the add-on of polyvinylpyrrolidone is 100m, and the add-on of macroporous microsphere silica gel is 5.0g, thiourea add-on is 4.56g.

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Abstract

The invention discloses a material for absorbing and decomposing formaldehyde, and a preparation method thereof. The material for absorbing and decomposing formaldehyde takes macroporous microsphere silica gel as a carrier, and a formaldehyde decomposing agent is loaded on the macroporous microsphere silica gel. The formaldehyde decomposing agent is loaded on the surface of the macroporous microsphere silica gel, the formaldehyde decomposing agent can perform photocatalytic decomposition on formaldehyde adsorbed by the macroporous microsphere silica gel, the material adsorbs formaldehyde through the macroporous microsphere silica gel, the formaldehyde decomposing agent decomposes formaldehyde in time, and the problem that the adsorbed formaldehyde is desorbed at high temperature is avoided.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a material for absorbing and decomposing formaldehyde and a preparation method thereof. Background technique [0002] Formaldehyde is one of the main indoor pollutants that modern humans live in, and is defined as a primary carcinogen by the International Cancer Organization. [0003] The main sources of formaldehyde are divided into two categories. The first is that industrial pollutants contain formaldehyde. As a result of industrialization, air pollution is serious, and the content of formaldehyde is increasing year by year. Formaldehyde in the air is bound to flow into the room. Second, human beings have higher and higher requirements for the decoration of the living environment, resulting in the use of more and more varieties of interior decoration materials. The most commonly used binders for panel furniture are urea and formaldehyde, which are cheap and fast cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/30B01D53/86B01D53/72B01J27/043
CPCB01J20/103B01D53/8668B01J27/043B01J35/004B01D2258/06
Inventor 刘花蓉敬小东彭佳刘红
Owner SICHUAN COLLEGE OF ARCHITECTURAL TECH
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